CVE-2026-54405Network attack vector

Unauthenticated denial of service

Published Jul 2, 2026 · Updated Jul 2, 2026

Improper input validation in Ubiquiti UniFi Network Application before 10.4.57 allows remote attackers to interrupt the service. Ubiquiti has not disclosed the affected request, field, or validation error that causes the application to fail. Network access is sufficient and authentication is not required; successful exploitation denies management service availability, with no reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Ubiquiti UniFi Network Application before 10.4.57 allows remote attackers to interrupt the service. Ubiquiti has not disclosed the affected request, field, or validation error that causes the application to fail. Network access is sufficient and authentication is not required; successful exploitation denies management service availability, with no reported data disclosure or modification.

The record

CVE
CVE-2026-54405
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Ubiquiti Inc.
Product
UniFi Network Application
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <10.4.57

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ubiquiti Inc. · UniFi Network Applicationversion=0 <10.4.57

Published CVSS scores

7.5HackerOneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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